diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27c366b..1e96b13 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- add `alloc` requirement to `num-traits` feature  [#363]
+
+[#363]: https://github.com/recmo/uint/pull/363
+
 ## [1.12.1] - 2024-03-12
 
 ### Fixed
diff --git a/Cargo.toml b/Cargo.toml
index 045830b..d7ad848 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "ruint"
 description = "Unsigned integer type with const-generic bit length"
-version = "1.12.1"
+version = "1.12.2"
 keywords = ["uint"]
 categories = ["mathematics"]
 include = [".cargo/", "src/", "README.md"]
@@ -125,6 +125,7 @@ ark-ff-04 = ["dep:ark-ff-04"]
 bn-rs = ["dep:bn-rs", "std"]
 fastrlp = ["dep:fastrlp", "alloc"]
 num-bigint = ["dep:num-bigint", "alloc"]
+num-traits = ["dep:num-traits", "alloc"]
 parity-scale-codec = ["dep:parity-scale-codec", "alloc"]
 primitive-types = ["dep:primitive-types"]
 proptest = ["dep:proptest", "std"] # TODO: change to "alloc" on the next proptest release (>1.2.0)
diff --git a/src/support/num_traits.rs b/src/support/num_traits.rs
index f74f857..e73d5f9 100644
--- a/src/support/num_traits.rs
+++ b/src/support/num_traits.rs
@@ -26,6 +26,9 @@ use num_traits::{
     CheckedEuclid, Euclid, Inv, MulAdd, MulAddAssign, Num, NumCast,
 };
 
+#[cfg(not(feature = "std"))]
+use alloc::vec::Vec;
+
 // TODO: AsPrimitive
 
 // Note. We can not implement `NumBytes` as it requires T to be `AsMut<[u8]>`.